Question: (2) Consider the matrix -1 1. 1 -1 2. 3 4. -1 -1 -2 12. 3 Answer the following questions and justify your answer

(2) Consider the matrix -1 1. 1 -1 2. 3 4. -1

(2) Consider the matrix -1 1. 1 -1 2. 3 4. -1 -1 -2 12. 3 Answer the following questions and justify your answer in your own words. (a) What is the RREF of A? (b) is there a solution for all veetors be R with Ax = b? () Do the columis of A span R?

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